Hanisha Koneru created HDFS-11339:
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Summary: Support File IO sampling for Datanode IO profiling hooks
Key: HDFS-11339
URL: https://issues.apache.org/jira/browse/HDFS-11339
Project: Hadoop HDFS
Issue Type: Improvement
Components: hdfs
Reporter: Hanisha Koneru
Assignee: Hanisha Koneru
Fix For: 3.0.0-alpha2
HDFS-10958 introduces instrumentation hooks around DataNode disk IO and
HDFS-10959 adds support for profiling hooks to expose latency statistics.
Instead of profiling all the file IO events, we can sample a fraction of the
events and profile them. The fraction to be sampled can be configurable.
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